Nacreous

Word no.15 is nacreous, meaning iridescent like mother of pearl.
Now, I have absolutely nothing in the house or garden that looks in the least like mother of pearl (which I don't like very much), so I had no idea how to address this one.
Then I thought I'd have a go at creating something in photoshop from a starting image of a dandelion seed head.
I'm not really that convinced by it, but it's the closest I'm going to get!